Color Indicating Media

Hydrogen Sulfide (H2S) detecting media is available for the Manhole Odor Eliminator. This media changes color depending on the concentration of H2S it has been exposed with. Examining the media when changing the filter cartridge helps set the maintenance schedule to maximize filter life.

Before and After

New activated carbon is a deep black color (Left). As it becomes saturated with Hydrogen Sulfide (H2S) and other contaminates it changes to a lighter blue-gray color (Right).